Home / 52,028.32-78,054-28,642.72

Finding the Fourth Proportional to 52,028.32, 78,054 and 28,642.72

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Solution

The fourth proportional to 52,028.32, 78,054 and 28,642.72 is: 42,970.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,028.32 : 78,054 = 28,642.72 : x
  2. Step 2: Convert to fraction form
    52,028.32/78,054 = 28,642.72/x
  3. Step 3: Cross multiply
    52,028.32x = 78,054 × 28,642.72
  4. Step 4: Simplify right side
    52,028.32x = 2,235,678,866.88
  5. Step 5: Solve for x
    x = 2,235,678,866.88/52,028.32
  6. Step 6: Final answer
    x = 42,970.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.